Another minor non-substantive edit to docs/source/parameter_taxonomy.rst file that should have been included in the prior check-in.  There are still 28 Sphinx warnings when running 'make html' in docs directory.
Another minor non-substantive edit to
docs/source/parameter_taxonomy.rst file that should have been included
in the prior check-in.  There are still 28 Sphinx warnings when
running 'make html' in docs directory.

mcdeaton13/Tax-Calculator,mmessick/Tax-Calculator,jlyons871/Tax-Calculator,mmessick/Tax-Calculator,jlyons871/Tax-Calculator,mcdeaton13/Tax-Calculator